Importance 0f GMT to Navigation & Communications on Earth & in Space

“About – The Importance of Greenwich Meantime to Navigation and Communications on Earth and in Space”, is a Power Point presentation setting out the importance of GMT relative to the functions in the title. Discussing how GMT helps to define your position on land, sea, air & in Space. Explains how Satellite navigation systems rely on GMT and global positioning to determine where you are on Earth and in Space. GMT is also relevant to communications due to time differences in other parts of the worl.Although GMT now has several names they all rely on GMT as the datum line. The most accurate is the Atomic Clock which is rarely more than +/- one second different to GMT.